Winding-machine.



J. 0. MGKEAN,

WINDING MACHINE.

APPLICATION FILED AUG. 6, 1913.

1, 1 26,808, Patented Feb. 2, 1915.

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J. O. MOKEAN.

WINDING MACHINE.

APPLIOATION FILED AUG. 6, 1913. 1,126,808, V Patented Feb. 2, 1915.

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KEFEFIEGEQ JOHN OLIPHANT MCKEAN, OETdYESiiFIlIELD, MASSACHUSETTS, ASSIG'NOR TO. FOSTER MACHINE COMPANY, 0E WESTFIELD, MASSACHUSETTS, A CORPORATION OF MAINE.

. WINDING-MACHINE.

masses,

To all whom it may concern:

Be it known that 1, JOHN O. -McKEAN, a

citizen of the United States, residing at Westfield, in the county'of Hampden and State of Massachusetts, 'have invented new -onto 'a' quill or core,'and particularly to winding machines of that class which produce conical cops having the well known self binding open wind; Machines of this class have heretofore been .so constructed that the completed'co'p was made with a practically square butt end, that Is,

with a base end whose surface was perpen'n dicular with relation-to the axis of the cop, or substantially so. i

As the thread guide of a winding machine of the class specified "travels' toward the large end of the cop thej'convolutions are laid progressively more nearly at right angles relatively to the axis of thecop until the base end of the cop is reached whereupon the thread guide reversesits direction of movement and travels back toward the small end of the cop.- When the thread guide reverses at the base of thecop there is a momentary dwell of the thread guide during which the yarn laid 'onto' the base corner of the cop for a substantial distance at practically a right angle relatively to the axis of the cop beforethe thread guide starts the yarn on its next spiral toward the s'm'all end. It will thus be seen that each'spiral winding of the cop that is laid 'thereon by movement of the threadgui de. toward the baseis connected with the. nextspi'ral'winding that is laid thereonby the immediately following movement ofthe threadguide toward'the small end of the cop, by a poi'tion or strand which lies along the corner ,or

peripheral edge of thecop' fora substantial distance; Heretofore this structural peculiarity of the base of a conical open wind"? cop combined with the perpendicular, d'r substantially perpendicular, relation of said base with the axis of the cop, has resulted in imperfect and insecure winding at said base.

lhe imperfection in the winding was due to the fact that in practice it is impossible for the thread guide to lay each spiral-connecting portion in exactly the po- I $p ecifica tionof Letters Patent.

sition upon the previously laid spiral con- Patented Feb, 2, 11ers;

Application filed August 6, 1913. Serial No. 783,254.

necting portion beneath it, that it should occupy. Sometimes, also, the tension on the yarn as it is being laid displaces previously laid strands beneath it, if they have not been as the'res'ult. If carried beyond its proper position, not only does the 'spiral connec'ting portion become a float upon the butt'endv 'of the cop through its being free't'osag toward the axis, but the subsequently laid spiral connecting portions above it are not properly supported and they too are free to sag toward the axis and produce floats'or looseness. Likewisea spiral-connecting portion laid short of its proper position would not properly support subsequent strands laidupon' it, which consequently would be loose, and being under some tension when laid would draw down across the baseof the cop. In either case the result would bethe formation of loose'thr'eads or'strands acrossthe baseof the cop, from'one point to another of the peripheral edge of the cop. Such an imperfection is very objectionable as, in the process of unwinding, the yarn lying across the base, as it is drawn ofi'over perfectly 'laid, with an imperfect structure" the sinall end tends to pull or lift the cop,

putting a sudden strain upon the yarn WhiCh results in breakage and snarling of the latter'.

The object of my invention is to provide an improved winding machine 'whi'chwill obviate the objections noted and itco'nsists of a winding machine so constructed that the yarn being wound onto the cop genera'tes a force which is used to vary the relation between the thread guide and oop as the winding operation progresses so that each succeeding spiral-connecting portlon or strand at the base ofthe cop is laid short of the position occupie'dby the previously laid' spiral-connecting portion beneath it. This results in the spiral-jconnecting por tions of the base of the cop occupyi'ng a shelvedrelation so that the base of said cop is crowned and the objections above noted are obviated,

' In the accompanylng drawingsi Figure l is a partial front elevation of a winding machine embodying oneform of my invention; Fig. 2 is aside elevation of the mechanism shown in Fig. 1; and Fig. 3 is an elevation of a cop such as is produced by the machine.

Having reference to the drawings, 1, 1,

represent two posts forming part of the to a spindle, 5, whereof one end is fastened to a yoke, G, pivotally connected at 7, to the lower end of a link 8. At its upper end the link 8 is pivotally connected at 9, to a bracket 10, rigidly fastened by a screw 11, to a fixed bar 12, forming part of the frame of-the machine. The yoke 6, is in the form of a right angle and its outer bifurcated end straddles the endof spindle 5, and is pivotally connected therewith by a bolt, 13. A spring 14, secured to the yoke 6, normally holds spindle 5 against turning on bolt 13,

but when removing a. completed cop and placing a fresh quill on the mandrel the spindle and mandrel may be swung outward on bolt 13 into an accessible position.

On its rear side the yoke 6, is made with a fin 15 that is embraced by the forked arm 16, of a bell, crank lever 17. The other arm of ever 17 is pivotally connected with the member 181, forming part of theusual stop motion mechanism whereby the machine is automatically stopped when the yarn being wound breaks, or when the operation of winding a cop is completed. Lever 17 is loosely mounted on bar 12 between two collars, 18, fixed to the latter. When the yarn breaks or when a cop is completed the member 181 is pulled toward the left, Fig. 2, and acts through levers l6 and 17 and oke 6 to lift the cop off from the driving rum 3 thereby stopping the winding operation.

- The yarn or thread is led from the supply over a guide-bar 19, and through a thread.

guide 20, to the cop being formed on spindle 5, thread guide 20 being slidably mounted on a bar 21', and reciprocated lengthwise of the co by the usual cam, not shown.

During the windin operation the threadguide 20 has a fixe region of movement that is, it continuously reciprocates in the same path in the usual fashion, but in my machine the continued addition of yarn to the cop that is being formed not only acts to force spindle 5 away from drum 3 as the cop grows in diameter but it also acts through the cop and yoke 6 to swing link 8 on its pivot 9 and this movement of link 8. acts.

to shift the spindleand the cop bodily endwise relatively to drum 3 and thread guide 20, .in a direction toward the butt or large end of the cop. This'endwise movement of the cop occasioned by the movement of link 8 is continuous during the winding operation and causes each-'spiral-connecting portion or strand of the yarn to -be deposited on the butt of the. cop by the thread guide 20 in a position just back or short of the spiralconnecting portion or portions onto which it islaid, with the result that the butt of the cop is made up of superimposed s iral-connectlng portions which occupy a slelved or receding relation so that the butt end of the cop is crowned as shown at 22- in Fig. 3, and is free of floats or other imperfections. The pivot 7 is preferably arranged just back of the middle point of spindle .5, and as will be clear this pivot ermits the cop to at all times properly bed itself upon the cop driving drum 3.

The principle of operation of the machine Will now be clear. The wedging action of the yarn as-it is drawn between the driving drum and the cop tends to force the cop upward, but, owing to the fact that the yoke 6 is carried upon the end of swinging link 8, which is pivoted at its other end to one side and above the cop, the efiort of the cop-and yoke to move directly upward'results in forcing the moving end of link 8, that is, the pivot point 7, to move in a curved path, :20, about the pivot 9, the effect of which is to progressively shift the cop in the direction of its butt end as it grows in size and the spindle and yoke rise.

What I claim is In a winding machine, a thread guide; a driving drum; a cop holder, a cop holder frame carrying the cop holder at the end of its free arm, the other arm being carried upon the swinging end of a lever; that lever, pivoted to a fixed member on the frame toswing in the direction of the butt of the cop parallel with the axis of the cop as the cop grows and swings the cop holder frame up.

Signed by me at lVestfield, Mass, this 4th day of August, 1913. f

JOHN OLIPHANT MCKEAN. Witnesses:

\ ALICE C. BREEN,

E. T. EowLER. 

